FBI agents arrested the owners of a local printer supply company on Wednesday for allegedly purchasing stolen ink and toner cartridges from a Philadelphia man beginning in 2006.

Derek and Danita Willis of Russellville, owners of Laser Cartridge Plus, are charged with five counts of mail fraud for their involvement with Calvin Duncan, a former Philadelphia Water Department mail clerk who used that city's funds to place more than $1.3 million in excess orders for ink and toner, according to the U.S. Attorney's Office for the Eastern District of Pennsylvania. Investigators said Duncan had the cartridges shipped to Laser Cartridge Plus in exchange for $545,000.

The couple is also charged with aiding and abetting, perjury and obstruction of justice for the destruction of documents related to the scheme, according to a press release from the U.S. Attorney's Office.

The release said the charges against Derek Willis carry a maximum sentence of 120 years imprisonment and a fine of $2.25 million. The charges against Danita Willis carry a maximum sentence of 110 years imprisonment and a $1.75 million fine.